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Use mathematical induction to prove that (13) + (24) + (35) ++ (n1)(n+1) = [ n(n1)(2n+5)]/ 6 for all integers n2.
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q. Use mathematical induction to prove that(1×3) + (2×4) + (3×5) +···+ (n−1)×(n+1) = [ n(n−1)(2n+5)]/ 6

for all integers n≥2.

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